/* Modern Admin Panel Styles */

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #48bb78;
    --warning-color: #f6ad55;
    --danger-color: #fc8181;
    --dark-bg: #1a202c;
    --darker-bg: #0f1419;
    --card-bg: #2d3748;
    --text-primary: #f7fafc;
    --text-secondary: #a0aec0;
    --text-muted: #718096;
    --border-color: #4a5568;
    --hover-bg: #374151;
    --sidebar-width: 280px;
    --header-height: 70px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Login Page Styles */
.admin-login-body {
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 50%, var(--darker-bg) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: rgba(45, 55, 72, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 10px;
}

.logo i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.login-form {
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
    position: relative;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group label i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 38px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 5px;
}

.password-toggle:hover {
    color: var(--primary-color);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
}

.checkbox-container input {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    margin-right: 8px;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-container input:checked + .checkmark {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-container input:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
}

.forgot-password {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: var(--secondary-color);
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 10px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.login-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.login-footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.error-message {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--danger-color);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    display: none;
    align-items: center;
    gap: 10px;
    animation: slideIn 0.3s ease;
    z-index: 1000;
}

.error-message.show {
    display: flex;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Admin Layout */
.admin-body {
    background: var(--dark-bg);
}

.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--darker-bg);
    border-right: 1px solid var(--border-color);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: transform 0.3s ease;
    z-index: 1000;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.logo span {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.sidebar-toggle:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.sidebar-nav {
    padding: 20px 0;
}

.nav-list {
    list-style: none;
}

.nav-item {
    margin-bottom: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.nav-item.active .nav-link {
    background: var(--primary-color);
    color: white;
}

.nav-link i {
    width: 20px;
    text-align: center;
}

.badge {
    margin-left: auto;
    background: var(--danger-color);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    position: absolute;
    bottom: 0;
    width: 100%;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.user-info {
    flex: 1;
}

.user-name {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
}

.logout-btn {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.3s ease;
}

.logout-btn:hover {
    color: var(--danger-color);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

.top-header {
    height: var(--header-height);
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.mobile-sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.mobile-sidebar-toggle:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.search-bar {
    position: relative;
    display: flex;
    align-items: center;
}

.search-bar i {
    position: absolute;
    left: 12px;
    color: var(--text-secondary);
}

.search-bar input {
    padding: 8px 12px 8px 36px;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    width: 250px;
    transition: all 0.3s ease;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.notifications {
    position: relative;
}

.notification-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.3s ease;
    position: relative;
}

.notification-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.notification-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background: var(--danger-color);
    color: white;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
}

/* Dashboard Content */
.dashboard-content {
    padding: 30px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.stat-change {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.85rem;
    font-weight: 600;
}

.stat-change.positive {
    color: var(--success-color);
}

.stat-change.negative {
    color: var(--danger-color);
}

.stat-change.neutral {
    color: var(--text-muted);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.view-all {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.view-all:hover {
    color: var(--secondary-color);
}

.card-content {
    padding: 24px;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.activity-item {
    display: flex;
    gap: 16px;
    padding: 16px;
    background: var(--dark-bg);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.activity-item:hover {
    background: var(--hover-bg);
}

.activity-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.activity-details h4 {
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.activity-details p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.activity-time {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.quick-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.action-btn {
    padding: 16px;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.action-btn:hover {
    background: var(--hover-bg);
    border-color: var(--primary-color);
}

.action-btn i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.action-btn span {
    font-size: 0.9rem;
}

/* Messages Page */
.messages-content {
    padding: 30px;
}

.message-filters {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.filter-tabs {
    display: flex;
    gap: 8px;
}

.filter-tab {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-tab:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.filter-tab.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.filter-options select {
    padding: 8px 12px;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    cursor: pointer;
}

.header-actions {
    display: flex;
    gap: 12px;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--secondary-color);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--hover-bg);
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #e53e3e;
}

.messages-container {
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.messages-list {
    max-height: 600px;
    overflow-y: auto;
}

.message-item {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.message-item:hover {
    background: var(--hover-bg);
}

.message-item.unread {
    background: rgba(102, 126, 234, 0.05);
    border-left: 4px solid var(--primary-color);
}

.message-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.message-avatar {
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    flex-shrink: 0;
}

.message-content {
    flex: 1;
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.message-name {
    font-weight: 600;
    color: var(--text-primary);
}

.message-email {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.message-time {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.message-preview {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.message-subject {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-secondary);
}

/* Message Details Modal */
.message-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.detail-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.detail-row strong {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.detail-row a {
    color: var(--primary-color);
    text-decoration: none;
}

.detail-row a:hover {
    text-decoration: underline;
}

.message-text {
    background: var(--dark-bg);
    padding: 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    line-height: 1.6;
    white-space: pre-wrap;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h2 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .sidebar-toggle,
    .mobile-sidebar-toggle {
        display: block;
    }
    
    .top-header {
        padding: 0 20px;
    }
    
    .dashboard-content,
    .messages-content {
        padding: 20px;
    }
    
    .message-filters {
        flex-direction: column;
        gap: 16px;
    }
    
    .filter-tabs {
        width: 100%;
        justify-content: space-between;
    }
    
    .header-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .quick-actions {
        grid-template-columns: 1fr;
    }
    
    .search-bar input {
        width: 150px;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: 30px 20px;
    }
    
    .modal-content {
        width: 95%;
        margin: 20px;
    }
    
    .message-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .message-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
}